If a gold bar and a silver bar are tied together firmly and left for years, some of the gold particles will be found in the silver bar due to
The phenomenon where particles from a gold bar migrate into a silver bar (and vice versa) when tied together for years is due to diffusion in solids.
Diffusion is the process by which particles move from a region of higher concentration to a region of lower concentration, resulting in an even distribution.
A. Brownian movement: This is the random motion of microscopic particles suspended in a fluid (liquid or gas), not the slow intermingling of atoms within solid metal bars.
C. Displacement: This term generally refers to a change in position or the replacement of one element by another in a chemical reaction. It does not describe the physical process of gradual intermingling of atoms in the context of the question.
D. Osmosis: This is a special case of diffusion that involves the movement of solvent molecules through a selectively permeable membrane. It is a process specific to fluids and membranes and does not apply to solid metals.
:. The correct answer is Diffusion - option B
There is an explanation video available below.
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